From patchwork Fri Oct 4 12:34:15 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Wunderlich X-Patchwork-Id: 13822286 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 101B9CFA777 for ; Fri, 4 Oct 2024 13:00:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=GHaUG5cyywTVSn0olx177yyudjZMx8d30jdAXK4qx8Y=; b=irywL6wxi5T+G4q/0wY6sfAURY jByDLWjjlV4Z/gp4t4bFhpnn7iXUYcPiZh08/qFcKwVAQ+8hmsCtVh/TyI00XwTDxNyBn6qxTAryo RB9uuEwRwMSPxj2T5GseeL7iyQ43rK48TdNG4VQztyTxEL51ZDHtUZRsXIlVBcRXVZj0xM9d5+CWi fHhZmvuTtU8wqH2iGTZqW2bc0WAmH0PWbwtfCiJkeRM/sJrIvEZt+B7aEJN+ZVjrBwaabp7YRzGhK OtAoyzvODP8DkpBCTNOxG9PcRLizOw3/v6wwja5yVYQ2cnowshYxZYk8UgJ3yJT5fJ7oPwfjHpovT gzdgdShw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1swhv3-0000000CPZK-3o21; Fri, 04 Oct 2024 13:00:30 +0000 Received: from mxout4.routing.net ([2a03:2900:1:a::9]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1swhsY-0000000COvo-2UC6; Fri, 04 Oct 2024 12:57:57 +0000 Received: from mxbox1.masterlogin.de (unknown [192.168.10.88]) by mxout4.routing.net (Postfix) with ESMTP id 2FAFC100168; Fri, 4 Oct 2024 12:57:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mailerdienst.de; s=20200217; t=1728046669; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=GHaUG5cyywTVSn0olx177yyudjZMx8d30jdAXK4qx8Y=; b=D4q3jopcwRk4SiifFPdXxvpIahggC3+FK5kubGaaluBlj+RvOX85dFzkUDhntK4HhdESMO RgZ/e0RPL/Ga3/QGMp7jI/WJJyWb8JBTgxGwAmZ/ZdE4mr5HRyhCvswAUB5v5d010l/QBs 3WlCp4SDpLTUaEnpNpNplUmKlQivkKk= Received: from frank-u24.. (fttx-pool-217.61.153.189.bambit.de [217.61.153.189]) by mxbox1.masterlogin.de (Postfix) with ESMTPSA id 6D8FD40037; Fri, 4 Oct 2024 12:57:48 +0000 (UTC) From: Frank Wunderlich To: Linus Walleij , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno , Sean Wang Cc: Frank Wunderlich , linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, daniel@makrotopia.org, john@phrozen.org, ansuelsmth@gmail.com, eladwf@gmail.com Subject: [PATCH v1 1/4] pinctrl: mediatek: add support for MTK_PULL_PD_TYPE Date: Fri, 4 Oct 2024 14:34:15 +0200 Message-ID: <20241004123423.34519-2-linux@fw-web.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20241004123423.34519-1-linux@fw-web.de> References: <20241004123423.34519-1-linux@fw-web.de> MIME-Version: 1.0 X-Mail-ID: 58fb1d1a-ea44-4039-848e-1e6be5cf506e X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241004_055754_810859_1409EA55 X-CRM114-Status: GOOD ( 15.62 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Daniel Golle The MediaTek MT7988 SoC got some pins which only got configurable pull-down but unlike previous designs there is no pull-up option. Add new type MTK_PULL_PD_TYPE to support configuring such pins. Signed-off-by: Daniel Golle Signed-off-by: Frank Wunderlich --- .../pinctrl/mediatek/pinctrl-mtk-common-v2.c | 59 +++++++++++++++++++ .../pinctrl/mediatek/pinctrl-mtk-common-v2.h | 1 + 2 files changed, 60 insertions(+) diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c index 54301fbba524..eff2aecd31dd 100644 --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c @@ -601,6 +601,30 @@ static int mtk_pinconf_bias_set_pu_pd(struct mtk_pinctrl *hw, return err; } +static int mtk_pinconf_bias_set_pd(struct mtk_pinctrl *hw, + const struct mtk_pin_desc *desc, + u32 pullup, u32 arg) +{ + int err, pd; + + if (arg == MTK_DISABLE) + pd = 0; + else if ((arg == MTK_ENABLE) && pullup) + pd = 0; + else if ((arg == MTK_ENABLE) && !pullup) + pd = 1; + else { + err = -EINVAL; + goto out; + } + + err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PD, pd); + +out: + return err; + +} + static int mtk_pinconf_bias_set_pullsel_pullen(struct mtk_pinctrl *hw, const struct mtk_pin_desc *desc, u32 pullup, u32 arg) @@ -758,6 +782,12 @@ int mtk_pinconf_bias_set_combo(struct mtk_pinctrl *hw, return 0; } + if (try_all_type & MTK_PULL_PD_TYPE) { + err = mtk_pinconf_bias_set_pd(hw, desc, pullup, arg); + if (!err) + return err; + } + if (try_all_type & MTK_PULL_PU_PD_TYPE) { err = mtk_pinconf_bias_set_pu_pd(hw, desc, pullup, arg); if (!err) @@ -878,6 +908,29 @@ static int mtk_pinconf_bias_get_pu_pd(struct mtk_pinctrl *hw, return err; } +static int mtk_pinconf_bias_get_pd(struct mtk_pinctrl *hw, + const struct mtk_pin_desc *desc, + u32 *pullup, u32 *enable) +{ + int err, pd; + + err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PD, &pd); + if (err) + goto out; + + if (pd == 0) { + *pullup = 0; + *enable = MTK_DISABLE; + } else if (pd == 1) { + *pullup = 0; + *enable = MTK_ENABLE; + } else + err = -EINVAL; + +out: + return err; +} + static int mtk_pinconf_bias_get_pullsel_pullen(struct mtk_pinctrl *hw, const struct mtk_pin_desc *desc, u32 *pullup, u32 *enable) @@ -947,6 +1000,12 @@ int mtk_pinconf_bias_get_combo(struct mtk_pinctrl *hw, return 0; } + if (try_all_type & MTK_PULL_PD_TYPE) { + err = mtk_pinconf_bias_get_pd(hw, desc, pullup, enable); + if (!err) + return err; + } + if (try_all_type & MTK_PULL_PU_PD_TYPE) { err = mtk_pinconf_bias_get_pu_pd(hw, desc, pullup, enable); if (!err) diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h index 23688ca6d04e..9c271dc2b521 100644 --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h @@ -24,6 +24,7 @@ * turned on/off itself. But it can't be selected pull up/down */ #define MTK_PULL_RSEL_TYPE BIT(3) +#define MTK_PULL_PD_TYPE BIT(4) /* MTK_PULL_PU_PD_RSEL_TYPE is a type which is controlled by * MTK_PULL_PU_PD_TYPE and MTK_PULL_RSEL_TYPE. */